feat: add Feishu notifier for message notifications

- Implemented a lightweight notification library with support for multiple channels.
- Added FeishuNotifier class to send messages via Feishu webhook.
- Created README documentation for usage and configuration of Feishu notifier.
- Added TypeScript configuration for the project.
- Included a test script for verifying Feishu message notifications.

bun.config.ts

@@ -0,0 +1,17 @@
+// @ts-check
+import { resolvePath } from '@kevisual/use-config';
+import { execSync } from 'node:child_process';
+
+const entry = 'src/index.ts';
+const naming = 'app';
+const external = ['pm2'];
+await Bun.build({
+  target: 'node',
+  format: 'esm',
+  entrypoints: [resolvePath(entry, { meta: import.meta })],
+  outdir: resolvePath('./dist', { meta: import.meta }),
+  naming: {
+    entry: `${naming}.js`,
+  },
+  external,
+});